第四十二难

难经 · section 17 · 佚名 舊題扁鵲 · 502 characters

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Original text

人肠胃长短,受水谷多少,各几何?

然。胃大一尺五寸,迳五寸,长二尺六寸,横屈受水谷三斗五升,其中常留谷二斗,水一斗五升。小肠大二寸半,迳八分,分之少半,长三丈二尺,受谷二斗四升,水六升三合,合之大半。回肠大四寸,迳一寸半,长二丈一尺,受谷一斗,水七升半。广肠大八寸,迳二寸半,长二尺八寸,受谷九升三合,八分合之一。故肠胃凡长五丈八尺四寸,合受水谷八斗七升六合八分合之一。此肠胃长短,受水谷之数也。

肝重四斤四两,左三叶右四叶,凡七叶,主藏魂。心重十二两,中有七孔三毛,盛精汁三合,主藏神。脾重二斤三两,扁广三寸,长五寸,有散膏半斤,主裹血,温五脏,主藏意。肺重三斤三两,六叶两耳,凡八叶,主藏魄[16]。肾有两枚,重一斤一两,主藏志。胆在肝之短叶间,重三两三铢,盛精汁三合。胃重二斤二两,纡曲屈伸,长二尺六寸,大一尺五寸,迳五寸,盛谷二斗,水一斗五升。小肠重二斤十四两,长三丈二尺,广二寸半,迳八分,分之少半,左回叠积十六曲,盛谷二斗四升,水六升三合,合之大半。大肠重二斤十二两,长二丈一尺,广四寸,迳一寸,当齐右回十六曲,盛谷一斗,水七升半。膀胱重九两二铢,纵广九寸,盛溺九升九合。口广二寸半,唇至齿长九分,齿以后至会厌,深三寸半,大容五合。舌重十两,长七寸,广二寸半。咽门重十两,广二寸半,至胃长一尺六寸。喉咙重十二两,广二寸,长一尺二寸,九节。肛门重十广两,大八寸,迳二寸大半,长二尺八寸,受谷九升三合,八分合之一。

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第四十二難 — 難經